ACS Applied Energy Materials
·
2022
·
IF 6.959
Ziyue Wang,Huan Liu,Yicheng Peng,Jiyang Xie,Chengding Gu,Wanbiao Hu
Enhancing the breakdown strength (Eb) and polarization of the polymer-based composites through improving the effective interface bonding between the inorganic fillers and polymer matrix is always pursued to achieve high electrostatic energy storage performances. Along with this, paraelectric–ferroelectric (P–F) structured bipolymer PMMA-P(VDF-HFP) was copolymerized and blended to maintain the high Eb but reduce the residual polarization, and meanwhile, potassium triniobate (KNb3O8) rods synthesized by a molten salt (KCl and K2SO4) method were surface-modified using a polydopamine (PDA) shell to form fillers for the fabrication of the composite films that were prepared by a solution casting process. The fabricated PDA@KNb3O8/PMMA-P(VDF-HFP) composite film by filling only a tiny amount of PDA@KNb3O8 (1.0 wt %) exhibits a much enhanced dielectric constant (ε ∼ 9) and polarization (Pmax ∼ 6.9) and large Eb (∼600 MV m–1), therefore giving rise to a high energy density of 15.30 J cm–3 combined with a discharge energy efficiency of 65%. The results herein can be comparative and superior to those of many high-energy storage inorganic–polymer systems that may render this system much potential for dielectric energy storage capacitors.
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ChemistrySelect
·
2025
·Vol. 10
·期 22
·e06151
·
IF 2
Dongyang Zhou,Xiaoqing Li,Gui Wang,Min Zuo,Ziwei Lan,Fengling Jiang,Dickon H.L. Ng,Jia Li
Graphical A novel and facile strategy was applied for designing and fabricating a bioinspired 3D hierarchical SC (sodium citrate)-functionalized MgAl-LDHs-based magnetic micromotor as an active self-propelled micromachine for the adsorption and removal of TCH or PNP from water. This paper reports a novel bioinspired 3D hierarchical sodium citrate (SC)–functionalized layered double hydroxides (LDHs)-based magnetic micromotor as an active self-propelled micromachine for the adsorption and removal of TCH or PNP from water. This micromotor was composed of MgAl-based layered double hydroxides intercalated with citrate anions (CA) and MgFe 2 O 4 fiber/Mn 3 O 4 . The outer SC-functionalized MgAl-LDH layer functioned as a functional unit for TCH or PNP adsorption, MgFe 2 O 4 fibers acted as a buffer layer, facilitating the nucleation and growth of MgAl-LDH. MgFe 2 O 4 nanoparticles provided magnetism for recycling. Mn 3 O 4 served as a catalyst in decomposing H 2 O 2 for self-propulsion of the micromotor. The obtained micromotor exhibited a circle motion form with an average speed of 147.50 µm s −1 in 5 wt% H 2 O 2 . Due to the cooperation of self-propelled movement with interlayer water repellency after SC intercalation, these micromotors exhibited a rapid removal rate of antibiotics or organic pollutants from water. The maximum adsorption capacities of SC-MgAl-LDH/MgFe 2 O 4 /Mn 3 O 4 toward tetracycline hydrochloride (TCH) and p -nitrophenol (PNP) were 146.20 and 127.39 mg g −1 in the presence of 5 wt% H 2 O 2 . Therefore, this study provides an efficient option for wastewater treatment.
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ACS Nano
·
2025
·
IF 16
Fenghong Lu,Yuanyuan Zhang,Lingbo Zong,Chengbin Wang,Kaicai Fan,Cheng-Hao Chuang,Porun Liu,Zumin Wang,Lei Wang,Bin Li
The rational design of efficient oxygen reduction reaction (ORR) catalysts with maximized atom utilization is essential for advancing the oxygen depolarized cathode technology. Here, we report atomically dispersed Fe, P heteronuclear catalytic pairs on hierarchical porous carbon, in which the hydrogen bond between Fe, P catalytic pairs and ORR intermediates significantly enhances the adsorption/desorption kinetics and lowers the rate-determining step barrier of OH* desorption. Thus, Fe,P/HPC delivers an alkaline ORR performance with a half-wave potential (E1/2) of 0.92 V and retains ∼90% of the initial activity even after 150 h operation. In addition, Fe,P/HPC achieves an E1/2 of 0.74 V in 0.1 M HClO4. The Fe,P/HPC-based aqueous Zn–air battery (A-ZAB) achieves a high power density of 262 mW cm–2 and exhibits enhanced stability, sustaining a minimal voltage gap over 2800 h of constant-current cycling. Moreover, the quasi-solid-state Zn–air battery (QSS-ZAB) delivers a large open-circuit voltage of 1.52 V, while maintaining a cycling stability for over 95 h at 0.5, 1, and 2 mA cm–2, respectively. In the chlor-alkali process, the Fe,P/HPC||RuO2 electrolyzer enables a large current density of 300 mA cm–2 at 1.66 V and maintains stability over 110 h. The present work pioneers the designing and construction of atomic-level heteronuclear catalysts for practical and durable cathode.
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PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Siqi Wang,Zijian Chen,Ting Li,Heng Zhang,Sane Zhu,Hongdian Lu,Chunxiang Wei
The development of advanced epoxy resin (EP) composites that simultaneously integrate mechanical toughness, flame retardancy, and early fire-warning functionality represents a challenge for safety-critical engineering applications. To overcome these limitations, this study designed a multifunctional EP/HMN-MXene system through the incorporation of phosphorus-nitrogen (P-N) co-modified MXene (HMN-MXene) into EP matrix. This innovative material was fabricated by first synthesizing a water-soluble P-N compound (HMN) via nucleophilic substitution reaction, subsequently grafting it onto hydroxylated Ti 3 C 2 T x MXene, and finally introducing the resulting HMN-MXene into EP precursors to yield a composite exhibiting a remarkable negative temperature coefficient (NTC) effect, significantly enhanced toughness, and exceptional flame retardancy. The EP/HMN-MXene system demonstrates three distinct advantages: the synergistic combination of phosphorus-nitrogen-rich HMN with MXene's catalytic charring effect improves both thermal stability and flame retardancy, the unique wrinkled morphology of HMN-MXene effectively deflects crack propagation, resulting in toughness improvement compared to pure EP, and the intrinsic NTC effect of MXene enables rapid resistance response to temperature at 100 °C (∼1.25 s) and direct flame exposure for fire-warning activation. Furthermore, the system exhibits excellent ambient-temperature curing behavior, achieving rapid gelation within approximately 20 min. These combined functionalities position EP/HMN-MXene as a promising candidate for demanding safety-critical applications requiring multifunctional performance.
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MOLECULES
·
2017
·Vol. 22
·期 7
·1165
·
IF 2.861
Xican Li,Yage Tian,Tingting Wang,Qiaoqi Lin,Xiaoyi Feng,Qian Jiang,Yamei Liu,Dongfeng Chen
The aim of this study was to explore the role ofp-coumaroyl in the antioxidant and cytoprotective effects of flavonoid glycosides. The antioxidant effects of astragalin and tiliroside were compared using ferric ion reducing antioxidant power, DPPH• scavenging, ABTS•+scavenging, •O2–scavenging, and Fe2+-chelating assays. The results of these assays revealed that astragalin and tiliroside both exhibited dose-dependent activities; however, tiliroside exhibited lower IC50values than astragalin. In the Fe2+-chelating assay, tiliroside gave a larger shoulder-peak at 510 nm than astragalin, and was also found to be darker in color. Both of these compounds were subsequently evaluated in a Fenton-induced mesenchymal stem cell (MSC) damaged assay, where tiliroside performed more effectively as a cytoprotective agent than astragalin. Tiliroside bearing a 6′′-O-p-coumaroyl moiety exhibits higher antioxidant and cytoprotective effects than astragalin. The 6′′-O-p-coumaroyl moiety of tiliroside not only enhances the possibility of electron-transfer and hydrogen-atom-transfer-based multi-pathways, but also enhances the likelihood of Fe-chelating. Thep-coumaroylation of the 6"-OH position could therefore be regarded as a potential approach for improving the antioxidant and cytoprotective effects of flavonoid glycosides in MSC implantation therapy.Keywords:tiliroside;astragalin;p-coumaroyl;flavonoid glycoside;mesenchymal stem cells
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高影响因子
RSC Advances
·
2019
·Vol. 9
·期 46
·26729-26733
·
IF 3.049
Ya Zhu,Jialing Han,Qian Zhang,Zhou Zhao,Jin Wang,Xiaowei Xu,Haiping Hao,Jun Zhang
Human NAD(P)H:quinone oxidoreductase (hNQO1) can be used as a biomarker for the early diagnosis of cancer. In this article, a novel fluorescent probe 1 for detecting hNQO1 was designed and synthesized by using 2-dicyanomethylene-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran (TCF) derivative (TCF-OH) as a fluorophore and quinone propionic acid (QPA) as a recognition group. The probe, which has high selectivity for hNQO1 and a Stokes shift of about 117 nm, shows a linear relationship with hNQO1 concentrations in the range of 0.25–3 μg ml−1 with the color changes from yellow to red and was successfully applied to intracellular hNQO1 imaging.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Qinghua Zhang,Jingxian Jiang,Fan Gao,Guangfa Zhang,Xiaoli Zhan,Fengqiu Chen
In this work, an original amphiphilic copolymer P(PEG-PDMS-KH570) combined with SiO 2 nanoparticles (SiO 2 NPs) was utilized to prepare polyether sulfone (PES) nanocomposite ultrafiltration (UF) membrane with enhanced antifouling performance. The enrichment of the organic-inorganic modifier P(PEG-PDMS-KH570)@SiO 2 were realized at the same time as the formation of PES UF membrane via sol-gel non-solvent induced phase separation (NIPS) process. The interaction between the copolymer P(PEG-PDMS-KH570) and SiO 2 NPs furnished a stable and effective antifouling PES UF membrane. Surface morphology, chemical composition characterization and wetting property measurements confirmed the segregation and distribution of the nanocomposite modifier. The multi-defense mechanism from fouling resistance to fouling release of the nanocomposite membranes was investigated by setting bovine serum albumin (BSA) aqueous solution as a model foulant. The antifouling properties of the modified membranes, especially for the PES/T@SiO 2 ∼4% membrane, were effectively improved. The flux decline rate of PES/T@SiO 2 ∼4% membrane was as low as 15.6%, and the flux recover ratio was up to 99.0%. Moreover, the modified membranes also possessed remarkable antifouling stability. Results of this work provide a facile method to construct a hierarchical and heterogeneous membrane surface that could achieve the multi-defense mechanism in efficient water treatment.
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Defence Technology
·
2025
·
IF 5.9
Xiandie Zhang,Zhijie Fan,Heng Xu,Jinbin Zou,Chongqing Deng,Xiang Zhou,Xiaode Guo
Al/NH 4 CoF 3 - Φ ( Φ = 0.5, 1.0, 1.5, 2.0 and 3.0) binary composites and Al-NH 4 CoF 3 @P(VDF-HFP) ternary composites are fabricated via ultrasonication-assisted blending and electrostatic spraying. The effect of equivalence ratio ( Φ ) on the reaction properties is systematically investigated in the binary Al/NH 4 CoF 3 system. For ternary systems, electrostatic spraying allows both components to be efficiently encapsulated by P(VDF-HFP) and to achieve structural stabilization and enhanced reactivity through synergistic interfacial interactions. Morphological analysis using SEM/TEM revealed that P(VDF-HFP) formed a protective layer on Al and NH 4 CoF 3 particles, improving dispersion, hydrophobicity (water contact angle increased by 80.5% compared to physically mixed composites) and corrosion resistance. Thermal decomposition of NH 4 CoF 3 occurred at 265 °C, releasing NH 3 and HF, which triggered exothermic reactions with Al. The ternary composites exhibited a narrowed main reaction temperature range and concentrated heat release, attributed to improved interfacial contact and polymer decomposition. Combustion tests demonstrated that Al-NH 4 CoF 3 @P(VDF-HFP) achieved self-sustaining combustion. In addition, a simple validation was done by replacing the Al component in the aluminium-containing propellant, demonstrating its potential application in the propellant field. This work establishes a novel strategy for designing stable, high-energy composites with potential applications in advanced propulsion systems.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuting Zhang,Mingyang Liu,Jianan Liu,Zhangxin Xu,Qianxi Liu,Ruihong Wang,Huiyuan Meng,Baojiang Jiang
It is an efficient strategy to introduce dual active sites into alkaline urea-assisted water electrolysis systems by interfacial coupling, but it still poses certain challenges. In this study, Ni 2 P-RuP 2 /C with hollow sphere structure is designed and synthesized by using solvothermal, ion exchange and one-step phosphating strategy. Studies utilizing density functional theory (DFT) and Synchrotron radiation show that Ni-P-Ru bridge in Ni 2 P-RuP 2 /C acts as an electron transport pathway that promotes localized charge redistribution, causing electrons to flow from Ni 2 P/C to RuP 2 /C, optimizing the d-band center and reducing the reaction barrier of HER and UOR. It is determined that the electron-rich Ru sites favor proton adsorption and the electron-deficient Ni sites favor the adsorption of urea molecules and the release of CO 2 which become the true active sites of HER and UOR, respectively. The optimized Ni 2 P-RuP 2 /C need merely 13 mV and 1.314 V to attain 10 mA cm −2 for HER and UOR, respectively. This study provides a reliable pathway for green hydrogen production through the construction of Ni-P-Ru bridge.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Jinnuo Yang,Wenqiang Ai,Lingke Li,Shilong Dong,Jiahui Lv,Ruiqi Wang,Yang Liu,Lei Zu,Huiqin Lian
Sodium-ion batteries (SIBs) offer great viability for extensive energy storage due to their abundance, low cost, and excellent safety. In this study, we investigate the relationship between P–O–C bonds content and electrochemical performance of black phosphorus–hard carbon–carbon nanotubes (BP-HC-CNTs) composite anode. A series of composites are prepared via ball milling, in which the relative P–O–C bonds content is modulated by varying the HC to CNTs ratio, and the effect of different relative P–O–C bond contents on the electrochemical performance of the materials is systematically investigated. The findings indicate that tuning the HC to CNTs ratio alters the chemical bonding degree between phosphorus and carbon, specifically the P–O–C bond content, which positively correlates with enhanced electrochemical performance. Notably, the composite with the highest P–O–C content (36 %) exhibits superior performance compared to those with lower bond contents: The specific capacity is approximately 2.9 times higher after 600 cycles at 6.0 A g ⁻¹ , and after 2000 cycles at 15.0 A g ⁻¹ , it is about 5.7 times higher. These results demonstrate excellent rate capability and cycling stability. Therefore, we propose that adjusting the hard carbon/carbon nanotubes ratio effectively regulates P–O–C bonds formation, which is essential for improving interfacial stability and electrochemical kinetics.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Yanchao Zhang,Jingyi Wu,Song Wang,Junjian Yu,Yiman Gu,Yan Wang,Jian Gao,Chang Sun,Zhanyu Li,Yijia Lei,Na Li,Jialin Zhao,Zhe Wang
The establishment of well-developed ionic conduction channels and the preparation of excellent chemical stability are urgent needs for anion exchange membranes. In this study, we successfully prepared poly ( p -terphenyl-piperidine-bromoacetophenone) polymers using superacid catalysis. Then a series of QPTPP-N-ASU-x AEMs were prepared by introducing N-spirocyclic side chain cations (N-ASU) with different grafting rates. The introduction of N-spirocyclic cations with better alkali resistance increases multiple OH − transport sites, contributes to the microphase separation structure, and is synergistic with piperidine cations to rapidly construct ion transport networks, giving the membranes good conductivity and alkali resistance stability. The AFM showed that QPTPP-N-ASU-5% AEM had a remarkable microstructure and formed large ionic domains, the conductivity of the membrane was 121.2 mS cm −1 , corresponding to a peak power density of 477.25 mW cm −2 . The conductivity residual of QPTPP-N-ASU-5% AEM was 94.15 % and 87.71 % after immersion in 2 M and 4 M NaOH at 80 °C for 1440 h. It shows that membrane has good potential for application.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Chengmin Hou,Weimin Yan,Hanxiao Ma,Yuan Bai,Zhiting Yuan
Heavy metal ion (Cu(II)) wastewater will do great harm to human body and environment, and the adsorption materials used in traditional adsorption methods are easy to hydrolyze, resulting in secondary pollution to water. In this paper, an adsorption material poly(glycidyl methacrylate-random-hydroxyethyl methacrylate) grafted ferric oxide@starch (St/Fe 3 O 4 - g -p(GMA- r -HEMA)) was prepared, which had epoxy and hydroxyl group , easy to produce crosslinking, reduce the sensitivity of starch to pH and prevent hydrolysis. Infrared spectroscopy (FTIR), thermogravimetric analysis (TG), scanning electron microscopy (SEM) and magnetometer (VSM) were used to characterize the structure and morphology of the adsorbent. The adsorption properties of the adsorbent for removal of Cu(II) ions were studied via changing the experimental conditions, including the amount of adsorbent, Cu(II) ions solution concentration, pH value, adsorption time, adsorption temperature and so on. Under the optimal adsorption conditions of pH value 7, initial Cu(II) concentration 20 mg/L and adsorption time 160 min, the maximum unit adsorption capacity of St/Fe 3 O 4 - g -p(GMA- r -HEMA) was 94.15 mg/g, and the adsorption performance was good. The adsorption process followed Langmuirm model and second-order kinetic model , and was dominated by chemisorption . The thermodynamic model showed that the adsorption process of St/Fe 3 O 4 - g -p(GMA- r -HEMA) was endothermic. After 8 adsorption cycles, 93.5% of the first adsorption effect can still be retained, and the renewable performance had been improved.
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